#include <stdio.h>
int main()
{
	int a,b,c;
	printf("please input :");
	scanf("%d",&a);
	printf("you input:%d\nplease input in format 2018/9/12\n",a);
	scanf("%d/%d/%d",&a,&b,&c);
	printf("you input:%d-%d-%d",a,b,c);
	return 0;

}